There is a new pull request by ericonr against master on the void-packages repository

https://github.com/ericonr/void-packages aspell
https://github.com/void-linux/void-packages/pull/27342

Aspell: force 32bit hash on all platforms
See https://github.com/void-linux/void-packages/issues/16659

The other solutions are either

- an aspell-32bit-compat package to cross build for 32bit archs on 64bit host
- adding plumbing around all dictionary packages to use qemu (which will break next time someone adds a dictionary)

Since neither of those are great, I went with the simplest one.

A patch file from https://github.com/void-linux/void-packages/pull/27342.patch is attached